Eye-testing instrument



G. H. DAY.

' EYE TESTING INSTRUMENT. APPLICATION FILED DEC. 26.1917- 1,343,092, v Patented July 27, 1920.

INVENTOR GEORGE H. DAY

mmju a MW A new rs UNITED STATES PATENT OFFICE.

GEORGE H. DAY, OF SOUTHBRIDGE, MASSACHUSETTS, ASSIGNOR TO AMERICAN OPTICAL COMPANY, OF SOUTHBRIDGE, MASSACHUSETTS, A VOLUNTARY ASSOCIATION OF MASSACHUSETTS.

EYE-TESTING INSTRUMENT.

To all whom it may concern:

Be it known that I, GnoRGn H. DAY, a citizen of the United States, residing at Southbridge, in the county of Worcester and State of Massachusetts,fhave invented cer- 1 "tain new and useful Improvements in 'Eyeadjustment of said frames.

used for supporting'lenses before the eye when testing the vision of a patient and the leading'object of the invention is the provision of means for adjusting the lens holding frame separately or simultaneously.

Another obj ect'of the invention is the provision of a trial frame whereby the lens frames can be adjusted so that the correct vision of the eyes of a patient is readily obtained through separate or simultaneous A further object of the present invention 'is the provision of a trial frame provided withmeans whereby the lens frames can be quickly and readily adjusted separately or simultaneously and securely held in. place after being adjusted to their desired positions. 30

With the above and other objects in view the invention consists in the novel features of construction and the combination and arrangement of parts hereinafter more fully set forth andpointed out in the accompanying drawings, in which Figure I is a front elevation of atrial frame constructed in accordance with my invention. Fig. II is a longitudinal sectional view through the adjusting means.

Fig. III isa detail section of the clutch members.

' Fig. IV is a detail plan view of the spring catch'member which holds the movable'members in their adjusted-positions. V

Fig. V is a longitudinal sectional view 1 illustrating a modified form of the invention;

' Fig. VI is a similar viewillustrating still another form of the'inventionyshowing'the clutch at the inner ends of the rods. 1

Referring now more particularly 'to the drawings it will be noted that I have illustrated my invention as'applied to a trial frame which includes in its construction a pair of lens frames 1 supported beneath a sreciflcation of L r Patent Patented July 27, 1920. Application filed December 26, 1917. Serial No. 208,938.

longitudinal bar 2 which carries a plurality of bearings 3 and 4, supporting for rotation thereinscrew threaded rods 5 adapted for longitudinal adjustment. that the bearings 3 at the ends of these rods are smooth while the central bearings 4 are internally threaded for adjustment and are formed on the upper ends of the arms 6 which support the lens frames 1. i

The bearing at one end of the bar 2 is provided with an enlarged opening 7 adapted to-receive and support a sleeve 8, and mounted upon this sleeve is a collar 9 secured thereto by means of the set screw 9. Formed on the outer end of the sleeve 8 is "a collar 10 provided upon the interior with the circumferential grooves 11 adapted to receive the oppositely projecting fingers 12 formed upon the outer end of'the; pivoted arm 13 andeXtending from opposite sides It will be noted thereof. This arm 13 is m ovablydisposed v within'a channel llformed within the elongated cap 'member 15 and is pivoted at its outer en'dbetween the walls of this channel by meansofthe pin 16, said arm being nor- I mallyheld a raised position by means'of coil spring 17 which is disposed between the arm and the bottom of the channel.

When the collarI1O and cap 15 areal-ranged in their' relative positions the arm 13 is disposed within an elongated aperture. '18

formedinthe .collar so. that thefingers 12.

may be disposed in the'grooves 11 ateither end of the collar.

" 'It will be noted from a view of theaccompanying drawings that the cap 15 is thread- '8', the rod can be moved through the sleeve 8 whereby the finger 12 on' the arm 13 can be "disposed in either ofthe grooves 11 and held in placethrough the tension of the spring 17 The inner ends'of the'rods 5 areformed withapposed clutch faces120j so that when these faces are engaged the rods will be rotated together and are easily disengaged by actuating the arm 13 to release the fingers 12 from the grooves 11 to permit of a sliding movement of the rod 5. The cap 15 is securely held from unscrewing cit the rod 5] by means of a set screw'2l which extends through the wall of the cap and engages at its inner end with thethreaded portionof the rod thus retaining the rod against turning movement.

From the above description taken in con motion with the accompanyingdrawings it will be readily apparent that' by adjustment of one of the rods 5 to bring the inner ends thereof into contact w th each other .both names may be moved simultaneously, and

when the ends are disengaged the frames may be adjusted separately by turningthe caps 15 and 21 to rotate either one of the rods, it being understood that the .cap21 .SQCUI'QCIIOIVOHQ of the rods 5 at the opposite end ofthe frame from the cap 15. It will be noted thatthis form of the invention is simiple, in its construction and the lens frames can be quickly adjusted with respect to; the

nose bridge and are )rov.ided.-with means wherebythey may be adjusted either sep- I arately or simultaneously.

,In Fig. I have, illustrated a slightly modified form of the invention wherein the screw rod which supports the adjusting can be readily an means is'fixed against movement longitudinally and 1s provided Wlth. a cylindrical bore 22. ,The. rod 23 whichflextends-through the bore 22 is mounted for rotatingand sliding movement .and,lprovided upon its inner end with a pocket 24, the outer end of whichis rectangularin cross section and adapted to fit over the rectangular portion of the rod 23 so that .uponturning movement ofthe rod 23 the rod 23 willbe rotated therewitlnand for va free turning movement of- 'eitherof Secured to the outer means of the spring actuated catch 29 carried-by the sleeve. 26 and adapted to engage within the recesses 28' formed in the reduced portion of. the sleeve, wherebyrlthe rod 28 I can be Iquicklyand easily adjusted to engage LanddiSengage' the inner; ends of therods 5 and 23withfrespect to-Qeach other. ,Froni this itwill be applarent that theflens frames arately or simultaneously, I j I In Fig. .VI, I have illustrated a-slightly modified form of the invention wherein the rodsf5 rand5 are ,detachabl-y connected toquickly adjusted with re- I 'spect to the faceofthe ;Wearer and so ar ranged that they may be adjusted either sepgether at their inner ends so that either one or both rods can he turned as desired. In this form of the invention a sleeve 30 is mounted upon 'the inner ends of the rods and held against turning movement by means of the pin "32 w hieh-isoarried by is mounted for sliding movement and the movement is limited to the length of the slot 31 and in ordervto connect the two rods at their inner ends a transverse pin 33 is carried by the sleeve 30 ,and'is adapted to engage'in an aperture 34 formed within the inner end of the rod 5 :wherehy upon sliding movement of thesleevefiO the pin 33 [can be engaged with the. aperture 3 4: to

rotate both rods simultaneously or disengaged from this aperture to. permit either rod to be rotated separatelyas desired. 7.

In order that this sleeve'may'be readily one of the rods and engaged within a slot '3l'forme'd within the sleeve 30. This sleeve actuated to: engage the pin 33' with the,

aperture 3 lI provide a pivoted catch 36 which is mounted upon the longitudinal bar 2 and'having its inner end engaged within a'slot 35 formedin the sleeve SO'and adapted longitudinally upon the rods} From this it willbe noted that by gra'spingth eouter end of the. catch and imparting a lateral movement thereto the sleeve 30 will be to be manually operated to move the sleeve readily movedilongitudinally to engage or disengagetheinner .ends of the rods.

I claim: 7 31. A trial frame including a longitudinal bar, adjustable rods carried by the 'bar, lens frames suspended from the rods, clutch ffaces formed onthe inner ends of said rods andI meanswhereby to engage and disengage the clutch faces to rotate Sitld'TOdS separately or simultaneously.

bar, adjustable rods-carried bysaid bar, lens frames suspended from" saidj rods, a collar secured to theflba riat theouter end of one lot said rods,Ihav;ing spaced grooves therein,

clutch faces on the inner ends ofsaid rods and a spring actuated catch carried by the outerend of one of saidrods for engagement with the grooves in the collar whereby the lens frames may be adjusted on the'rods separately or simultaneously.

2. A trial frame including-a longitudinal.

- 3. A trial frame including a supporting portion, a pair of adjustable lens holders carried. thereby, independent means "for adjustingsaid lens holders, and means to conadjusting .meansf for. joint actuanect the ,tion. .7 p 4. A trial frame including a support and lens receiving frames carried thereby, inde- I pendent adjusting rods. tor t'he frames, and means connecting the rods for simultaneous I operationw j r :5 Atrialf-frame including a support and lens receiving 'frames'carried thereby 'independent adjusting rods for the frames, and a separable connection to lock the bars means connecting the rods for simultaneous for joint operation. 10 operation, and means for selectively secur- In testimony whereof I have affixed my ing the connection in operative or inoperasignature, in presence of two Witnesses. tive position. GEORGE H. DAY.

6. A trial frame including a support, lat- Witnesses: erally shiftable lens cells carried thereby, WM. P. CHASE, independent adjusting bars for the lens cells, .WILLIAM B. J ONES. 

